Calculating-machine.



R. H. MAHOHANT.

CALGULMIM MAUMNE.

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R. H. MARCHANT.

CALCULATING MACHINE.

APPLICATION IILED11PR.2,1Q14. f

1,1 15,950. Panama No1/.3,1911

3 SHEETSl YSHEET 2.

INI/ENTOR,

WI TN ESSES R. H. MARCHANT.

GALCULA DING MACHINE.

APPLICATION FILED Alum, 1914.

Patented Nov. 3, 1914.

3 SHEETS-SHEET 3.

WI TNESSES:

1N VEN TOR, 4 AMM, B Y

A TTORNE Y MsCUsATINGMAsSINTE Application inea prii 2, 1914.seriaria2aoaa i To all whom it may concern: j

. Be it known that I, RODNEY H. MAR- GHAM, a citizen of the UnitedStates, residing at Oakland, in the county of'Alameda Aand State ofCalifornia, have invented new and useful Improvements in Calculating-`Machines, .of which the following isa speciiication. l

This. ,invention relates to improvements in calculating machines,especially those which perform the operations of multipli-y cation anddivision, and the object of the' invention isto provide an improvedmachine having a main shaft, preferably power-driven, which will beautomatically arrested, after a variable predetermined numberofrevolutions of said shaft. l

ln the accompanying drawing, Figure 1 is a broken side view of myimproved apparat-us 1:' Fig. 2 is a brokenplanfview/thereof; Fig. 3 is avertical section onthe line 3-3 of Fig. 1 Fig.` 4 is a vertical 'sectionon the line of Fig. 1; Fig. '5- isa vertical sec-y tion on the line 5-5of,Fig.-1, certain parts being broken away; Fig. 6 is a side View of adrum, partly broken away. l

'Referring to the drawing, 1- indicates a base, onwhich are standards'2, 3 through which extends a shaft 6 on Wliich-arelse cured wheels ordisks' from which are eX- tensible pins 4 and transfer pins 7, movablein a direction parallel with their axes, said pins 4, 7 being adapted torotate indicating wheels in the manner well known in vthe art andillustrated in Patent No. 514,725,

dated Feb. 13, 1894, lV. T. vOdhnerl 8 indicates almotor, upon theshaft) of which is slidable a clutch 11 keyed to said shaft and having afriction cone 12 engaging an internal friction cone-13 upon a shortshaft 14 extending through a bearing in an upright 16, said shaftcarrying on the other side of said upright a gear wheel 17 meshing witha gearrwheel 18 on a stud shaft 19 carrying a `pinion 21. Said pinion 21meshes `with v a gear wheel 22 secured to a drum`23, secured toa shaft24Jhaving its bearings in the upright 16 andjjinf--ahfnpright 26, and inline-with the shaft 6ta-:Upon said shaft 6 is slidably keyed a eliitch27operated 4by a lever 28, and which-can be operatively connected withtheshaft' 24, so that said-'shaft (Lis then rotated directlyby the shaft9. When the clutch'is slid on the shaft 6 asffarfas possible kfrom-fthemotor,

said shaft 61s their-driven' ima direction ,re

ruiter wheels 29,31, anda miter Wheel 32 meshingywith both initer wheels2 9 vand 3l. The ldrum 23 is thicker.. .in its A,central portion `toform a circular shoulder 33 on. one side, which forms a gearing ,for aring4 3,4.- rotatable on said shoulder, and of a. thickness equal to theheight of said shoul-l der, and provided with a projecting iinger 3G forthe purpose of enabling it to be con-f veniently rotated by hand. Acircular plate 3:5 secured `to the drum serves to hold the ring-34 1nplace.

one of which can enter the wedgesshaped outerl end of a pin 38, pressedoutwardlyby a coiled spring 39, said spring and pin beingI received. ina cylindricaly socket 41, partly in the thicker central portion of thedrum and partlyin the marginal portion thereof.A As the ring 34rotatesupon saidl Patented Noyn, ,19.14.

verseto its former direction by means of.

i The inner edge of vsaid' ring is formed with ten notches 37, into any.

shoulder, the pin 38 is repressedzjnto saidy i socketby the advancingside of one of they Vnotches and then is` pressed out: by. said springinto thenext succeeding notch, said pin thus. serving to retain the'ring in the position to which it has been last rotated; Said ringhasaconcentric arcuate slot `42, through which extends a block 43, slidablein a bearing therefor formed in the drum. The outer end of said block issufficiently narrow to pass into said arcuate slot, but` the innerend iswider, and 'is prevented passing through said slot by means of abei'eledshoulder 44 on its surface next the axis ofthe drum. The forward end ofthe arcuate' slot is extended, as shown at 46, to form von its outerside a short shoulder 47 adapted to engage a shoulder 48 upon the face4of said block remote from said axis, and act as a ,wedge to force theblock outwardly in a direction parallel with the axis, this nioifernentbeing permitted to take place by the fact that said extension 4(5"isalso enlarged in a Vdirection toward said axis,as shown vat 49, so'as topermit the shoulder 44 on the innenface tol project into and throughsaid extension. By this construction, wlien;the yring arrives at the endof lits oscillating movement, that is, when the slot has beenniovedfirst in a forward und then in'a rearward direction, the forward end ofthe slot causes the block to be prog jectedbeyond they face ofthe ringto an ea-` tentponsiderably greater than before.

with ten notches 51, which are adapted to engage a spur wheel 52rotatably mounted on a short screw 53 screwed into a attened portion 54of the drum, the outer portions of the spurs of said. spur wheel beingextended to form fingers 5G. of the iinger the ring 34 is rotatedthrough an are corresponding to any desired num- "berof spaces betweensaid notches, then the spur wheel 52 is also rotated through a'corresponding angle, and the arcuate slot is moved through acorresponding angle, it being observed that, immediately upon theforward movement of the arcuate slot a shoulder 57 of the extension 49`of said slot engages the shoulder 44 on the thicker or inner portion ofsaid block and withdraws said block to a position in which only a.portion thereof extends beyond the ring. New, the ring having beenturned through the angle mentioned, the motor is started by means to bepresently described and the drinn rotates in the same direction as thatin which the ring was rotated thereon; One

' ot' the fingers 56 of the spur'wheel always right Q6, and thespur-wheel is thereby rotated through the angular distance between vtwofingers, causing a corresponding backward rotation of the ring34'throu'gli the distance between two notches, and causing the arcuateslot to travel through a corresponding distance with reference to theblock. When the drum has rotated as many revolutions ascorrespond to thenumber of notches through which the ring was rotated to set the device,the end of the arcuate slot arrives at the block and the shoulg der 47engages said block, and as before explained, projects the block `fartherfrom the face of the plate. lThe block is formed with a head 40extending in the circumi'en 'ential direction of the arcuate slot.

The head 40, being now projected, first impinges against the beveled endof a pin 61 slidable in a. bearing in the upright 96 and normallyprojected therefrom by a. spring 62, forcing said beveled end backward,and passes the same, the spring immediately thereafter projecting saidpin, so as to .form a lock for holding the head in its position in whichit has passed said pin, the'obj'ect ot which lock will be presentlyexplained. As soon as said head has passed the pin, it strikes againstan arm 63 secured to a shaft 64 having its bearing in the upright 16,and rocks said shaft 64. An arm 66 extends from theiother end of theshaft 64, and engages the beveled or cam-shaped end 67 of a rockinglever 68 pivoted upon a forked extension 69 from the upri ht 16, andhaving an upper forked portion 1 engaging the clutch 11. Thus therocking ofthe"shat64lrocks p Then by means presses back al pin 72slidable ina horizon-y tal bearing in a block 73, and normally projectedby a coiled spring 74 in said block,

. and compresses said spring, the compression of. the spring serving toabsorb the momentum of the moving parts. 'Said pin has screwed thereintoa vertical screw 76, the head of which iinpinges upon one end of a lever77, pivoted on a `short standard 78 upon the base 1. The other end ofsaid lever '77 is formed to provide a cam or wedge 79 which engages acanrshaped end of a lever 81 pivoted upon a short standard 8:2 on thebase, theupper end of said lever 81 extending into a.A roove in a sleeve83 around the shaft 6. i aid sleeve 82 is normally pressed away from themotor by a coiled spring 84, of'- which one end abuts against saidsleeve 83 and the other end is pressed against a nut 86 screwed lon' athreaded portion of the shaft. The movement of the head of' said screw76 against said lever 77 causes the lever 81 to'move'in such a directionasto force the grooved sleeve 83 toward the motor against the force ofsaid compressed spring 84. In a recess in 4the end ofthe sleeve remotefrom the spring is received lthe outwardiy extending head 87 of a bar 88slidable in a groove in the shaft 6, said bar 88 having in its outeredge a series of notches 89 corresponding in' width with the severaldisks 5. Said disks. are keyed to the shaft 6 and are suitably 'spacedfrom one another and have between them setting .rings 91, each providedwith a suitable finger 92 for rotating the same, and rotatable inIcircula-r shoulders on the disks. in each disk section is heredacylindrical hole 93 which receives a pin 94 and a coiled the pins 94 ofthe respective disks 5, so that the inner end of each pin, upon beingre. pressed by the rotary movement of the corresponding setting ring 91,can enter a cor' responding notch 89. Consequently' said' setting ringscan be rotated to set themav chine for calculating. Butwhen the barl` ismost position when the drum is rotated, and

in its 'outermost position When the drum is at rest.

The shaft 6 is positively brought to rest by the following mechanism.The upper portion of the arm 63 engages a -beveled shoulder 9S of avertically slidable starting plate 99, guided by means of-two screws 101extending through slots in said plate and screwed into said upright 26,so that the forward motion of the arm A63 raises said starting plate.Said starting plate has a bent slot 102, which is `engaged by a re`duced end of a latching Vlever 103, pivoted on a vertical'pivot `in ahorizontal extension 101 of the upright 26, vand received Within agroove in said extension. the shapeof the bent slot the upward motion ofthestarting plate causes the end of the lever projecting throughsaidslot to move rearwardly and the other end of said lever to moveforwardly. Said other end is formed with a forwardly projecting finger106, which, when said-end is moved forwardly, moves rapidly into a notch107 in theedge of a disk 10S fastened to the shaft 6, and positivelyarrests said shaft.

To start the machine for multiplying or dividing, as the-case may be,the finger 36 is rotated through anangular distance corresponding to thenumber with which the mul-l tiplication or division is'to be effected.This motion immediat-ely, by means of the arcuate slot 12, causes thehead of the vblock 4:3 to be moved nearer to the drum 23, so that thearm'63 can be rocked backward, the head of the block being no longerbetween the arm 63 and the locking pin 61. The starting plate 99 is nowdepressed by means of a linger pieceA 109 secured on the up er endthereof, this depression being permitted by reason of the arm 63 beingable to move backward. When the starting plate is de` pressed, itsbottom edge engages a. .projecting end of a transverse pin 1-11 securedto a vertical pin 112 slidable in averticallypextending recess in theblock 73 closed at the lower 'end by a screw 117, the ends of the pin111 being slidable in vertical slots 113 in saidwblocln- The upperend'of the vertical pin 112 is beveled at the rear, as showiiat 114, toengage a beveled cut away portion of the pin 72. When said pin 72 Waspressed back By reason of j by the'pressure of the arm 63,. saidverticall pin 1 12, pressed upwardly by a coiled spring 116 in saidrecess, prevented the return ,v movement.- of said horizontal pin. l3ntlwhen the lstarting plate is depressed, then the vertical pin 112 is alsodepressed,ifor

the reasons just described, and the horizon` tal pin 7 2 is permitted tomove forwardly, which it does under theA action 'of the coiled spring74. The levers 77 and 81 are thenr free to move under the action of thecoiled 4spring 84, and the notched bar S8 is re- 'arresting said shaft,a device rotatable with jsaid shaft, and adapted, in an operativeposition, to actuate said arresting means, and means for moving saiddevice from an inoperative to anoperative position after a pre-ydetermined'number of revolutions of said shaft. f

2. The combination of a series of coinputingwheels, a rotary shaft forrotating ,the same, a device movable relatively to said shaft, means forrotating the shaft, means, adapted in the rotation of the drum to movesaid device relatively to said' shaft to an extent corresponding withthe number of rotations ofthe shaft, and means, adapted to be actuatedby the device when so moved, for arresting the motion of the shaft.

Sillhe combination of a series of com-- putingwheels, a rotary shaft forrotating the same, a device movable relatively to said shaft, means forrotating the shaft, means, adapted in the rotation 'of the drum to movesaid device relatively to said shaft to-an extent corresponding with thenumber of rotations of the shaft, a motor for said shaft, mechanism fordisconnecting said motor from said shaft, mechanism for absorbing themomentum of the moving parts, meclr anism for positively arresting theshaft, andl means adapted to be actuated by said device for operatingall of said mechanism.

4. The combination ofua series of computing wheels, a rotary shaft forrotating the same, a ring movable relatively to said shaft, means foryieldingly holding the vring in the position to which it has been moved,means for rotating the shaft, stationary device, adapted in the rotationof the .shaft to lmove said ring relatively to the shaft to an extentcorresponding with the number of rotations oftheshaft, a block 4slidablein a direction parallel with the axis to move the block in saiddirection, and

means, adapted to be, engaged by said block,-

for arresting the motion of the shaft.

5. The combination of a series of Computing-wheels, a rotary shaft forrotating the same, a drum carried by said shaft, a ring rotatablycarried by said drum and provided with means for rotating it on thedrum, .means for yieldinglyholding the ring in the positionto which ithas been moved, means for rotating the shaft, a sta.- tionary device,adapted in the rotation of the drum to nieve said ring backward thereonto an extent corresponding with the number of rotations of the drum, ablock slidable in the drum in a direction parallel with its axis ofrotation, said ring being adapted at the end of its backward` movement,to project the block farther from the drum,l and means, adapted to beengaged by said block, for arrestingthe motion of the shaft.

(3. The combination of a series of computing wheels, a rotary shaft forrotating the same, a drum carried by said shaft, a

ring rotatably carried by said drum and provided with Q means forrotating it on the drum, means for yieldingly holding the ring in theposition to which it has been moved,

means for rotating the shaft, a stationary device, adapted in therotation of the drum to move said ring backward thereon to an extentcorresponding with the number of rotations of the drum, a block slidableinv the drum in a direction parallel with its axis or' rotation, saidring being adapted at the end of itsbackward movement,to project theblock farther from thedrum, a motor for said shaft, mechanismfordisconneeting said motor from said shaft, mechanism 'for absorbingthe momentumof the drum, mechanism for positively arresting the drum,and means adapted to be' actuated by rotations of the drum, a blockslidable in the drum in a vdirection parallel with its axis of rotation,said ring being adapted, at the end of i-ts backward movement, toproject the block farther from the drum, and means, adapted to beengaged by said block,

`for arresting the motion of the shaft.

8. The combination of a series Ofcomputing wheels, a rotary shaft forrotating the same, a drum carried by said shaft, a ring rotatablycarried by said drum and provided with means for rotating it on thedrum, means for yieldingly holding the ring in the lposition to which`it has beerimoved, means for rotating the shaft, a stationary device,adapted in the rotation of the. drumy to `move said ring backwardthereon to an.

Varcuate slot adapted to engage the shoulder in the block and projectthe same fartherl from the drum, and means, adapted to be vengaged bysaid block, for arresting the motion of the shaft.

9. Thecombination of a Series of computinggwheels, a rotary shaftforrotating the same, a drum vcarried by :said shaft, a ringlrotatablylcarried by saidA drum formed on its outer edge with notchesand provided.-

with means for rotating it on the drum, means for fyieldingly holdingthe ring in. the position to which it has been `moved, meansforrotating. the shaft, a stationary device, a spur wheel rotatably carriedby the drum and the teeth of which mesh with said notches, the outerportions of said spurs bring extended to form fingers, adapted in therotation'of the drum tobe engaged in turn by said stationary device,whereby, in the,A

rotation of the drum, said ring is moved backward thereonto an extentcorrespond-1 mg with the number ofrotations of the drum, a blockslidable inthe drum and` through an arcuate slot in. the. ring in adirection parallel with its axis of rotation, said block having ashoulder, and the ring having a shoulderv at the end of the arcuate slotadapted to engage the shoulder in the blockand project the same fartherfrom the drum, and means, adaptedto be engaged by said block, forarresting the'motion lof the shaft.

In testimony whereof I have hereunto set my hand inthe presence of twosubscribing v witnesses.

`RODNEY H. MARCHANT,

Witnesses:

F. M. VRIGHT, D.y B. RICHARDS.

lflO

